PLATE VII. 



1-9. Cyclops fiuvialitis. 

 3. Antenna of young. 4, Abdomen of young. 10. Young of 0. serrulatus. 



11. Daplinella brachyura, female. 14. End qf male abdomen. 



12. " " male. 15. End of female abdomen. 



13. Part of edge of valves. 16. Antenna of male. 



li 



